Answer:
The correct answers are:
1)Tus
2)Mi
3)Sus
Explanation:
This is the case of possessive adjectives that are placed before the noun. As the name implies, they are to prove possession.
These adjectives must agree in number with the noun, and as for the people <em>nostros </em>and <em>vosotros</em>, in addition to agree in number, must also agree in gender.
The possessive adjectives that exist in Spanish are the following:
mi, mis
tu, tus
su, sus
nuestro, nuestra, nuestros, nuestras
vuestro, vuestra, vuestros, vuestras
su, sus
